Regarding the epidemiology of obsessive-compulsive disorder, which statement is most accurate?
- A OCD has a lifetime prevalence of approximately 2-3% worldwide ✓
- B The mean age of onset is in the fourth decade
- C OCD has a higher prevalence in males than females
- D Onset after age 50 is the most common pattern
Correct answer: A. OCD has a lifetime prevalence of approximately 2-3% worldwide
Explanation
OCD has a worldwide lifetime prevalence of approximately 2-3%. Adult OCD is slightly more common in females, though childhood-onset OCD shows a male predominance. Mean age of onset is typically in late adolescence to early adulthood (bimodal: early childhood and early adult years). Onset after age 50 is uncommon and warrants investigation for organic causes.
Reference: Kaplan and Sadock's Synopsis of Psychiatry, 12th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.